David Brown:
> Hello, I have recently replaced my old postfix with 2.7.0. And, for the
> first time I am trying to use IMAP (dovecot). Receiving email is OK but I
> cannot send because of the relay domains issue.
OK, so you can't send mail.
> Apr 5 15:12:57 myhost postfix/smtpd[30973]: warning: SASL authentication
> problem: unable to open Berkeley db /etc/sasldb2: No such file or directory
This is a problem with receiving mail.
If you want to solve the mail sending problem, then you need to
provide the symptoms of the mail sending problem.
Wietse